What rejection criteria are you using?

Paul

Paul Edwards
Surface Art Engineering

-----Original Message-----
From: TechNet [mailto:[log in to unmask]] On Behalf Of Lum Wee Mei
Sent: Friday, September 17, 2010 5:07 AM
To: [log in to unmask]
Subject: [TN] Crack and oxidisation on IC leads
Importance: High

Dear All,
 
During PCBA inspection, we noticed cracked line across the entire IC lead width at the knee location. It happen to the whole row on one side of the IC and we consider it a reject. However, our production subcontractor do not concur the component as reject. They said that the crack is only fine line and is unlikely to cause any major physical issue to the leads itself.
 
In another IC, we noticed a small area of oxidation on one of the lead of about 1 - 1.5mm in size. Again the subcontractor do not accept our decision that it is a reject. The reason given by them is that although the corrosion exposed the base metal it is acceptable because the exposed surface is not part of the required solder fillet.
 
I have tried to upload the photo on IPC Technet but not successfully. Hope from your experience, you can provide some opinions.
 
Thanks and Regards,
~ Wee Mei ~

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